Wireless charging device

Abstract

The present invention relates to a wireless charging device. A wireless charging device, according to one embodiment of the present invention, comprises: a coil assembly; a first substrate disposed on the coil assembly; an electromagnetic interference (EMI) filter disposed on a first surface of the first substrate; and a wireless communications antenna disposed on a second surface of the first substrate, wherein the coil assembly includes a plurality of coils, and the EMI filter can include a plurality of different pattern regions corresponding to the plurality of coils. Therefore, the wireless charging device having the EMI filter can be provided.

1 .- 10 . (canceled) 
     
     
         11 . A wireless charging device comprising:
 a coil assembly;   a first substrate disposed on the coil assembly;   an electromagnetic interference filter disposed on a first surface of the first substrate; and   a wireless communication antenna disposed on a second surface of the first substrate, wherein the coil assembly includes a plurality of coils; and   wherein the electromagnetic interference filter includes a plurality of pattern regions corresponding to the plurality of coils, respectively.   
     
     
         12 . The wireless charging device of  claim 11 , wherein the coil assembly includes a first coil, a second coil, and a third coil;
 wherein the first coil and the second coil are disposed on a second substrate;   wherein the third coil is disposed on the first coil and the second coil; and   wherein the plurality of different pattern regions include a first pattern region corresponding to the first coil or the second coil and a second pattern region corresponding to the third coil.   
     
     
         13 . The wireless charging device of  claim 12 , wherein the electromagnetic interference filter includes a first wiring disposed in a loop shape on the second surface. 
     
     
         14 . The wireless charging device of  claim 13 , wherein the first pattern region is connected through first connection structure positioned in opposite regions of the first wiring; and
 wherein the second pattern region is connected through a second connection structure positioned in a central region of the first wiring.   
     
     
         15 . The wireless charging device of  claim 14 , wherein the first connection structure is configured in a plural number, and the first connection structure has a smaller width than a width of the second connection structure. 
     
     
         16 . The wireless charging device of  claim 14 , wherein the first pattern region includes a second connection wiring connected to the first connection structure;
 wherein the second pattern region includes a third connection wiring connected to the second connection structure; and   wherein the third connection wiring has a smaller width than the first wiring or the second connection wiring.   
     
     
         17 . The wireless charging device of  claim 16 , wherein the first pattern region includes a first slit structure disposed in a first direction in the second connection wiring; and
 wherein the second pattern region includes a second slit structure disposed in a second direction in the third connection wiring.   
     
     
         18 . The wireless charging device of  claim 17 , wherein the first direction and the second direction are different from each other. 
     
     
         19 . The wireless charging device of  claim 17 , wherein the first direction and the second direction are orthogonal to each other. 
     
     
         20 . The wireless charging device of  claim 12 , wherein the first pattern region is disposed to be spaced apart from the first coil or the second coil; and
 wherein the second pattern region is disposed to contact the third coil.   
     
     
         21 . The wireless charging device of  claim 12 , wherein the first pattern region and the second pattern region have different inductance values. 
     
     
         22 . The wireless charging device of  claim 12 , wherein the first pattern region has a smaller area than an area of a portion on which the first coil or the second coil is disposed. 
     
     
         23 . The wireless charging device of  claim 12 , wherein the second pattern region has a larger area than an area of a portion on which the third coil is disposed. 
     
     
         24 . The wireless charging device of  claim 12 , wherein the first pattern region and the second pattern region have different areas. 
     
     
         25 . The wireless charging device of  claim 12 , wherein the first pattern region and the second pattern region have different shapes. 
     
     
         26 . The wireless charging device of  claim 12 , wherein the second pattern region is disposed between the first pattern regions that correspond to the first coil and the second coil, respectively. 
     
     
         27 . The wireless charging device of  claim 12 , wherein a spaced unit is disposed between the first pattern region and the second pattern region. 
     
     
         28 . The wireless charging device of  claim 16 , wherein the second connection wiring is shaped like a straight line, and the third connection wiring is shaped like a curve shape. 
     
     
         29 . The wireless charging device of  claim 17 , wherein the first slit structure includes a plurality of spaced wirings, and the plurality of spaced wirings have different lengths. 
     
     
         30 . The wireless charging device of  claim 17 , wherein the second slit structure includes a plurality of spaced wirings, and the plurality of spaced wirings have different lengths.